Improve test runner's Minitest integration.

This also adds free mix and matching of directories, files and lines filters.
Like so:

bin/rails test models/post_test.rb test/integration models/person_test.rb:26

You can also mix in a traditional Minitest filter:

bin/rails test test/integration -n /check_it_out/

1 files changed, 8 insertions, 7 deletions

diff --git a/railties/lib/rails/test_unit/testing.rake b/railties/lib/rails/test_unit/testing.rake
index 0f26621b59..dda492f974 100644
--- a/railties/lib/rails/test_unit/testing.rake
+++ b/railties/lib/rails/test_unit/testing.rake
@@ -1,12 +1,13 @@
-require "rails/test_unit/runner"
+gem 'minitest'
+require 'minitest'
+require 'rails/test_unit/minitest_plugin'
 
 task default: :test
 
 desc "Runs all tests in test folder"
 task :test do
   $: << "test"
-  args = ARGV[0] == "test" ? ARGV[1..-1] : []
-  Rails::TestRunner.run(args)
+  Minitest.run(['test'])
 end
 
 namespace :test do
@@ -23,22 +24,22 @@ namespace :test do
   ["models", "helpers", "controllers", "mailers", "integration", "jobs"].each do |name|
     task name => "test:prepare" do
       $: << "test"
-      Rails::TestRunner.run(["test/#{name}"])
+      Minitest.run(["test/#{name}"])
     end
   end
 
   task :generators => "test:prepare" do
     $: << "test"
-    Rails::TestRunner.run(["test/lib/generators"])
+    Minitest.run(["test/lib/generators"])
   end
 
   task :units => "test:prepare" do
     $: << "test"
-    Rails::TestRunner.run(["test/models", "test/helpers", "test/unit"])
+    Minitest.run(["test/models", "test/helpers", "test/unit"])
   end
 
   task :functionals => "test:prepare" do
     $: << "test"
-    Rails::TestRunner.run(["test/controllers", "test/mailers", "test/functional"])
+    Minitest.run(["test/controllers", "test/mailers", "test/functional"])
   end
 end